iText.Pdfocr.Tesseract4 Namespace Reference

Classes
class	AbstractTesseract4OcrEngine
	The implementation of iText.Pdfocr.IOcrEngine. More...
class	ImagePreprocessingOptions
	Additional options applied on image preprocessing step. More...
class	ImagePreprocessingUtil
	Utilities class to work with images.
class	LeptonicaImageRotationHandler
	Leptonica based implementation of iText.Pdfocr.IImageRotationHandler. More...
class	Tesseract4EventHelper
	Helper class for working with events.
class	Tesseract4ExecutableOcrEngine
	The implementation of AbstractTesseract4OcrEngine for tesseract OCR. More...
class	Tesseract4FileResultEventHelper
	Helper class for working with events.
class	Tesseract4LibOcrEngine
	The implementation of AbstractTesseract4OcrEngine for tesseract OCR. More...
class	Tesseract4MetaInfo
class	Tesseract4OcrEngineProperties
	Properties that will be used by the iText.Pdfocr.IOcrEngine. More...
class	TesseractHelper
	Helper class. More...
class	TesseractOcrUtil
	Utilities class to work with tesseract command line tool and image preprocessing using Net.Sourceforge.Lept4j.ILeptonica.

Enumerations
enum	OutputFormat { OutputFormat.HOCR, OutputFormat.TXT }
	Enumeration of the available output formats. More...
enum	TextPositioning { TextPositioning.BY_LINES, TextPositioning.BY_WORDS, TextPositioning.BY_WORDS_AND_LINES }
	Enumeration of the possible types of text positioning. More...

Enumeration Type Documentation

OutputFormat

enum iText.Pdfocr.Tesseract4.OutputFormat

strong

Enumeration of the available output formats.

Enumeration of the available output formats. It is used when there is possibility in selected Reader to process input file and to return result in the required output format.

Enumerator
HOCR	Reader will produce XHTML output compliant with the hOCR specification. Reader will produce XHTML output compliant with the hOCR specification. Output will be parsed and represented as IList of TextInfo objects
TXT	Reader will produce plain txt file.

TextPositioning

enum iText.Pdfocr.Tesseract4.TextPositioning

strong

Enumeration of the possible types of text positioning.

Enumeration of the possible types of text positioning. It is used when there is possibility in selected Reader to process the text by lines or by words and to return coordinates for the selected type of item. For tesseract this value makes sense only if selected OutputFormat is OutputFormat.HOCR.

Enumerator
BY_LINES	Text will be located by lines retrieved from hocr file. Text will be located by lines retrieved from hocr file. (default value)
BY_WORDS	Text will be located by words retrieved from hocr file.
BY_WORDS_AND_LINES	Similar to BY_WORDS mode, but top and bottom of word BBox are inherited from line.